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Thermodynamic Properties of Polyphenylquinoxaline in the Temperature Range of T → 0 to 570 K

  • Chemical Thermodynamics and Thermochemistry
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Abstract

The thermodynamic properties of amorphous polyphenylquinoxaline in the temperature range of 6 to 570 K are studied via precision adiabatic vacuum calorimetry and differential scanning calorimetry. The thermodynamic characteristics of glass transition are determined. Standard thermodynamic functions C°p, H°(T) − H°(0), S°(Т) − S°(0), and G°(T) − H°(0) in the range of T → 0 to 570 K and the standard entropy of formation at T = 298.15 K are calculated. The low-temperature (T ≤ 50 K) heat capacity is analyzed using a multifractal model for the processing of heat capacity, fractal dimension D values are determined, and conclusions on the topological structure of the compound are drawn.

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Smirnova, N.N., Markin, A.V., Samosudova, Y.S. et al. Thermodynamic Properties of Polyphenylquinoxaline in the Temperature Range of T → 0 to 570 K. Russ. J. Phys. Chem. 92, 226–231 (2018). https://doi.org/10.1134/S0036024418020206

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  • DOI: https://doi.org/10.1134/S0036024418020206

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